CAT 349D / 349D2 Main Hydraulic Pump – China Remanufactured (497-8497 / 295-9663)

Description

Detail Information

Note: The application information provided is for reference only. Please confirm the part number and compare it with the old component before purchasing. If you have any questions, please feel free to contact us.
It is worth choosing a product that features stable performance, high reliability, easy installation, and quick response.

1. Key Features & Benefits

• Precision‑remanufactured to Caterpillar OEM standards – This main hydraulic pump (OEM 497-8497 / 295-9663) has been fully disassembled, cleaned, crack‑inspected, and rebuilt to meet Caterpillar’s original equipment specifications. Every critical component – cylinder block, piston assemblies, valve plate, swashplate, bearings, and seals – is either renewed or replaced with new, high‑quality parts. The result is restored hydraulic performance at a fraction of the cost of a new genuine pump.

• Direct replacement for CAT 349D / 349D2 / 345D series excavators – Specifically engineered for Caterpillar 349D, 349D2, 345D, and related 45–50‑ton class excavators. This axial piston pump powers the boom, arm, bucket, swing, and travel circuits with the precise, high‑volume flow required for heavy mining, quarrying, and large‑scale earthmoving operations.

• Massive hydraulic output for 45–50‑ton class work – The CAT 349D main hydraulic system delivers a maximum flow of 734 L/min (194 gal/min) , with a main relief setting of 35 MPa (≈5,076 psi) . The pump features a displacement of 214 cm³/rev, providing the substantial hydraulic power needed for fast cycle times, high bucket fill factors, and responsive multi‑function operation – even when booming, swinging, and travelling simultaneously.

• High‑pressure capability for demanding applications – Rated pressure of 34.3 MPa (≈4,975 psi) with maximum pressure up to 39.2 MPa (≈5,685 psi) for short‑term peak loads. Some specifications indicate pressure capacity up to 350–400 bar (35–40 MPa). This pressure capability delivers consistent digging force, swing torque, and travel power hour after hour in the most demanding applications. The hydraulic cross‑sensing system utilizes each of the two hydraulic pumps to 100% of engine power under all operating conditions.

• Energy‑efficient, optimized design – Features an optimized swash plate design that reduces heat generation and internal friction. The pump regulators are factory‑calibrated to interface seamlessly with the CAT machine control system (ECM), ensuring smooth load‑sensing and flow‑sharing capabilities. The hydraulic system provides automatic priority function for boom‑up and swing operations, eliminating the need for work mode buttons.

• Superior durability and contamination resistance – Utilizes high‑strength alloy cylinder blocks and precision‑lapped piston shoes to ensure minimal internal leakage and maximum volumetric efficiency. Equipped with oversized, low‑friction bearings to withstand the high radial and axial loads generated during multi‑function hydraulic movements. Premium seals and gaskets are installed to withstand extreme pressures and temperatures.

• Heavy‑duty construction for extreme conditions – Built with a robust, reinforced structural design that ensures stable high‑pressure output even under extreme loads. The pump body is manufactured from high‑strength materials with excellent wear and impact resistance. Heavy‑duty bearings and bushings provide high peak power density and on‑demand flow performance, making it ideal for maintenance and replacement in demanding environments such as mining, quarrying, and heavy construction.

• Direct bolt‑on replacement – Mounting flange, drive shaft spline, and hydraulic port configurations are restored to original Caterpillar specifications. No modifications, no adapters – your mechanic unbolts the old pump and bolts this one in. With a weight of approximately 294 kg (648 lbs) , this is a substantial component built for the toughest conditions.

• Pre‑shipment visual verification – Before packing, we send you detailed high‑resolution photographs of the actual unit (mounting flange, splines, port threads, castings, overall condition). You approve shipment – we never ship blind.

• Fast delivery – 5–8 working days lead time from our Guangzhou warehouse. Monthly supply capacity of 300 units, available for single‑piece or bulk orders.

2. Applications

The remanufactured CAT 497-8497 / 295-9663 main hydraulic pump is the power source for 349D, 349D2, and 345D series excavators used in the most demanding job sites:

• Large‑scale open‑pit mining – 45–50‑ton excavators are the backbone of copper, gold, iron ore, and coal mining operations. The pump’s 214 cm³/rev displacement and 734 L/min flow deliver fast loading cycles and consistent digging force hour after hour in remote mine sites where reliability is critical. The hydraulic cross‑sensing system ensures 100% engine power utilization under all operating conditions, maximising productivity in the toughest overburden and ore extraction conditions. The heavy‑duty construction and oversized bearings withstand the extreme shock loads of hard rock extraction.

• Quarrying & aggregates – Loading trucks, stockpile management, and material handling in granite, limestone, and basalt quarries. The pump’s robust alloy cylinder blocks and precision‑lapped piston shoes withstand abrasive dust conditions, while the load‑sensing flow‑sharing capability provides smooth, responsive operation for precise bucket control. The automatic boom‑up and swing priority function eliminates the need for work mode buttons, allowing operators to focus on production.

• Heavy construction & infrastructure – Highway excavation, dam building, bridge footings, and large‑scale earthmoving projects. The pump’s massive flow (734 L/min) and high‑pressure capability (35 MPa) deliver consistent digging force and swing torque hour after hour, while the energy‑efficient design reduces fuel consumption across long shifts. The regeneration circuits for boom and stick enhance efficiency and reduce cycle times.

• Demolition & scrap processing – Shock loads, vibration, and sharp debris are routine in demolition yards and metal recycling facilities. The pump’s reinforced structural design and heavy‑duty bearings absorb these extreme conditions without premature wear. The reverse swing damping valve provides smooth, controlled swing motion in demanding demolition environments.

• Equipment rental fleet – 45–50‑ton excavators are high‑value rental assets. A remanufactured pump offers predictable performance at a cost that makes proactive replacement financially sensible – avoiding costly mid‑rental failures, towing bills, and customer complaints.

• Forestry & land clearing – Steep slopes, fallen timber, and uneven terrain demand reliable hydraulic performance. The pump’s consistent pressure output maintains stable power for saws, grapples, and mulchers, even under varying load conditions.

3. FAQ – Frequently Asked Questions

Q1: What is the correct part number for the CAT 349D main hydraulic pump?
A: The primary OEM part numbers for this pump are 497-8497 and 295-9663. These part numbers are interchangeable and refer to the same pump assembly for CAT 349D, 349D2, and 345D series excavators. To confirm the correct part for your specific machine, send us your machine serial number and a photo of the old pump nameplate – we will verify within 2 hours.

Q2: Is this a new pump or a remanufactured unit?
A: This is a professionally remanufactured pump. All internal wear components (bearings, seals, cylinder block, valve plate, pistons) are replaced or re‑ground to OEM specs. The result is a pump that performs like new – at a fraction of the cost.

Q3: What are the key specifications of this pump?
A: The pump is an axial piston pump with a displacement of 214 cm³/rev. Total maximum flow is 734 L/min (194 gal/min) . Rated pressure is 34.3 MPa (≈4,975 psi) with maximum pressure up to 39.2 MPa (≈5,685 psi) . The pump weighs approximately 294 kg (648 lbs) .

Q4: What is the warranty on this pump?
A: Warranty period is 3 to 6 months depending on product details. We do not provide warranty service for original used or remanufactured parts. Our value is delivered up front: careful remanufacturing, thorough testing, and pre‑shipment visual verification. For customers who require a warranty‑covered option, we can quote new aftermarket units – ask our sales team.

Q5: How long does delivery take?
A: Delivery is 5–8 working days after order confirmation from our Guangzhou warehouse. Express shipping (DHL/FedEx/UPS) is available for urgent orders.

Q6: What payment methods do you accept?
A: We accept L/C, T/T, XTransfer, PayPal, and Western Union.

Q7: How can I verify the pump is ready before shipping?
A: Before packing, we send you clear, high‑resolution photographs of the actual unit – mounting flange, splines, port threads, casting marks, and overall condition. You approve shipment only after reviewing these images. We never ship blind.

Q8: What oil should I use with this pump?
A: Use a mineral oil‑based anti‑wear hydraulic fluid as recommended by Caterpillar. The hydraulic system capacity is 570 L total including tank, with a hydraulic tank capacity of 243 L. Proper hydraulic fluid contamination control is essential to prevent premature wear and extend the pump’s working life. Always refer to your CAT 349D operator’s manual for the correct viscosity and specification.